Driving mechanism for bottle-washing machines



oct- 5 V A. ANDERS SON DRIVING MECHANISM FOR BOTTLE WASHING MACHINES Filed Feb. '13 1925 Patented Oct. 5, 1926.

- UNITED. TATES PATENT OFFICE,.-

AxnL nnnnnsson,

OF LUND, SWEDEN.

DRIVING MECHANISM non ne'r'riin-wnsnrne MACHINES.

Application filed February 13, 1925, Serial No. 8,925, and in Sweden March 5, 1824.

The invention relates to a device appertaining to bottle-washing machines and re fers more particularly to a machine having a horizontally arranged'bottle carrying revolving table.

The object of my invention is to provide a device for automatically causing the table to move step by step.

It is of the greatest importance in chines of this kind that the bottle carrying member stand still periodically to insure that the bottles are held for a sufficiently long time in correct relation to the cleansing and washing streams. The bulky mass of this member under consideration develops a large torque during its rotary movement and for this reason great forces are required to brake and stop the member. viously been attempted to solve this problem by means of mechanisms of various kinds, such as rocking pawl and notched disc arrangements, but hitherto the attempts made have been more or less unsatisfactory.

According to my invention the bottle carrying member is automatically and in a uniform and jerkless manner operated and stopped by means of a combined circular and spiral groove formed in one face of a disc revolving at constant speed, said groove cooperating with studs radially extending from the circumference of the circular bottle carrying member. The circular part of the groovethat is, the part whose center of curvature coincides with the axis or center of the discis disposed at the edge of the disc and extends over substantially half the circumference of the latter, and it corresponds to the periodical stopping of the bottle carrying member, while the rest of the groove is eccentric to the disc axis and has the form of a spiral, the free end of which 7 is at a distance from the free end of the circular part which corresponds to the distance between two adjacent radial studs on the circumference of the said member, which member, when a stud is situated in the spiral part of the groove, will be moved on one step when the disc is revolving. Thus the resting period and the moving period ofthe bottle-carrying member correspondeach to substantially half a revolution of thedriving disc.

In the accompanying drawing, Figure 1 is a face view, looking from the shaft of the bottle washing machine, of a circular isc with the groove arranged thereon. Fig- It has preure'2 is a top plan view of the groove disc anda part of the bottle carrying member provided with radially extending studs.

The invention is described in the following as applied to a machine having a horizontally arranged bottle carrying table 2 having radial rows of apertures S for supporting the bottles, but it is obvious that the invention may also be applied to other kinds of bottle-washing machines, for example to machines provided with revolving drums.

The device for automatically revolving the table, step bystep, consists of studs 14 extending radially from the circumference of the table and adapted to be caught in successive order by a combined circular and spiral groove 15 formed in one face of a disclrl revolving at constant speed. This disc 16 is disposed at right angles in relation to the axis of the studs and is fixed to a shaft 17 which is driven. by suitable driving means not shown. The groove 15 consists substantially of two parts: an outer part which has a true circular shape and extends over approximately half the circumference of the disc, and the center of curvature of which coincides with the axis or center of the disc, as previously stated, and an inner part which is a spiral curve. The grooved disc 15, 16 is so arranged in relation to the table 2, that on the one hand. the axis of the shaft 17 of the disc lies somewhat below a horizontal'plane passing through the axis of the studs 14, and that on the other hand the table is closest to the disc at a place near the circumference of the latter, or more cor-,

'rectly specified at a place between the ends of the groove, when the open free end of the outer part of the groove is directed upwards (Figs. 1 and 2). This arrangement is necessary in order to prevent the studs 14, 143,

which are in front of the studs in engagement with the groove, assuming the table to revolve in the dlr ction of the arrow 19, from touching the groove when said "disc is rotated in the direction of the arrow 18. As long as a stud 14 is in the circular part of the groove 15, the table is kept at rest, when the mouths of the bottles to be cleaned are in exact line with the axis of the streams of fluid, and when a stud is in the spiral part of the groove, the table will be moved one step farther in the direction of the arrow 19, but is prevented from rotating more than one step by the succeeding stud already being in engagement with the first part of the circular portion of the groove. By means of this device a reliable and jerkless revolving of the table, step by step, is obtained Without nefessitating the provision of special braking devices.

hat I claim and desire to secure by Letters Patent is:

Driving mechanism for bottle-washing machines comprising a rotatable circular carrying member having equally interspaced studs extending radially from its circumference. and a rotary disc having a combined circular and spiral groove, said groove facing and successively engaging the studs and arranged in closest relation to the carrying member at a place between the free ends of the groove when the open end of the outer part of the latter is directed upwards, the axis of the disc being arranged below the common plane passing through the axes of the studs.

In testimony whereof, I have signed my name to this specification.

AXEL ANDERSSON. 

